moisture in computer

Many types of nylon are hydrophilic (water loving) and will absorb to some
extent. That is why the better brands of diving torches don't use nylon or
similar plastics, but instead use Delrin (a trademark of DuPont) or similar
Acetyl plastics, which don't absorb water (they have properties nearer to
PTFE (Polytetrafluoroethylene / Teflon).




"PC" <w@w.W> wrote in message news:Ox6Vc.216$O24.96@newsfe3-gui.ntli.net...
> There is another likely candidate. THere is a certain ammount of moisture
in
> plastic. Given high temperature this will transpire from the plastic and
may
> condense on an adjacent surface in the sealed container. This is a
> recognised effect on Nightrider torches (and others of course) when used
out
> of water (as the head is so small and made of a plastic the heat builds
> quickly) a condensation appears later when cooling. There is no practical
> solution to this 'problem' as the water occours naturally and erradication
> is practically impossible. This will only manafest in high temp, so if you
> keep the computer cool this should help, as for long term damage.... the
> manufactures (you would think) should have made provision for this, adn
the
> components are further proctected. If it occours in cool conditions, I
would
> be more likely to agree with the previous posts.
>
>
> cheers
>
> Paddy
>
>
> --
> pat rick at vir gin dot net
>
> www.tigershark.org.uk
>
>
>
>
>
>
> "RayC" <ray@rayzplace.com> wrote in message
> news:411fef72$1_1@corp.newsgroups.com...
> > nonerequired wrote:
> > > I agree that there's moisture in there otherwise there shouldn't be
> > > condensation. It's also possible that I may have had something to do
> > > with it since I have had them apart. OTOH, I have one of those shop
> > > magnifiers, clean ALL surfaces and 0-rings, and inspect carefully
after
> > > applying silicon before assembly.
> > >
> > > In another thread I started I've found that these Pelagic based
> > > computers seem to start cracking around the base after awhile. My
Matrix
> > > has significant base cracking. My wife's is starting to crack. The
other
> > > one seems OK (for now). One reply from someone working in a shop
> > > indicated the is a common problem with this computer. Their shop will
no
> > > longer carry them. These are not abused computers.
> > >
> > > Same problem-how do I best get it out?
> > >
> > > Fritz
> >
> >
> > It could also be something as simple as high humidity in the
> > area when you open it for battery change.
> >
> > To get it out you just need to lower the humidity. You
> > already knew the answer ... put it in a sealed container
> > with some desiccant and leave the battery door open. And,
> > yes ... heat would do it, but it may also damage the
> > components or plastic.
> >
> > Let us know how it turns out!
> >
> > --
> > Ray Contreras
> > =-=-=-=-=-=-=-=-=-=-=-=-=-
> > Webmonkey for:
> > http://www.ossystems.com
> > http://www.bobs-garage.com
> > http://www.rayzplace.com
> >
> >
> >
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